Composite flours were prepared from blends of yellow maize (Zea mays), sesame seed (Sesamum indicum) and oyster mushroom (Pleurotus ostreatus) powder in the ratio of 80:20:0; 75:20:5; 70:20:10; 65:20:15 and 60:20:20, respectively to produce the cereal-based breakfast product coded as YSB, SMB, TMB, PMB and OMB with YSB as the control. The breakfast cereals were produced by hydration and toasting of yellow maize and sesame to 160 degrees C for 25 min and blended together with oven-dried and packaged oyster mushroom. The developed products were analysed for proximate, vitamins, minerals and sensory properties. The proximate composition (%) of different blends ranged as moisture (4.07-7.08), ash (3.09-2.28), crude fat (16.04-12.83), crude fibre (4.30-8.22), protein (16.14-22.54), carbohydrate (56.34-47.04) and energy (434.34-393.83 Kcal). Vitamin A (7.99-5.98 mg/100 g), vitamin B-1 (0.08-0.42 mg/100 g), vitamin B-2 (0.06-0.15 mg/100 g), vitamin B-3 (1.91-4.52 mg/100 g) and vitamin C (3.55-3.32 mg/100 g) were u while minerals (mg/100 g) were calcium (75.31-58.02), potassium (0.65-4.01), magnesium (12.25-12.62), iron (1.21-4.15) and zinc (0.40-1.32). Sensory scores revealed that the cereal-based breakfast product were acceptable to the panellist with oyster mushroom supplementation up to 10%.
